def human_readable_size(size_in_bytes: int) -> str:
    # 將檔案大小轉換為人類可讀的格式
    for unit in ["B", "KB", "MB", "GB", "TB", "PB"]:
        if size_in_bytes < 1024:
            return f"{size_in_bytes:.2f}{unit}"
        size_in_bytes /= 1024
    return f"{size_in_bytes:.2f}EB"


def abbreviate_number(number: int) -> str:
    # 將大數字轉換為縮寫格式
    for unit, threshold in [("B", 1e9), ("M", 1e6), ("K", 1e3)]:
        if number >= threshold:
            return f"{number/threshold:.2f}{unit}"
    return str(number)